<template>
  <div class="app-containter">
    <!-- 顶部 Header 区域 -->
    <mt-header fixed title="京东.Vue项目">
			<span slot="left" @click="goBack" v-show="flag">
				<mt-button icon="back">返回</mt-button>
			</span>
		</mt-header>
		<!-- 中间区域添加切换动画 -->
		<transition>
			<!-- 中间的路由router-view 区域 -->
			<router-view></router-view>		
		</transition>
    <!-- 底部Tabbar区域 -->
    <nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-home" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-home" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-home" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span class="mui-badge" id="badge">{{$store.getters.getAllCount}}</span></span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-home" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>
  </div>
</template>
<script>
export default{
	data() {
		return {
			flag:false
		}
	},
	created() {
		this.flag=this.$route.path=="/home"?false:true;
	},
	methods: {
		goBack(){//点击后退
			this.$router.go(-1);
		}
	},
	watch: {
		'$route.path':function(newVal){
			if(newVal==="/home"){
				this.flag=false;
			}else{
				this.flag=true;
			}
		}
	},
}
</script>

<style scoped>
.mint-header{
	z-index: 99;
}
.app-containter{
  padding-top: 40px;
	padding-bottom: 50px;
	overflow-x: hidden;
}
.v-enter{
	opacity: 0;
	transform: translateX(100%);
}
.v-leave-to{
	opacity: 0;
	transform: translateX(-100%);
	position: absolute; /* 解决当前一个尚未完全出去时，导致下一个进来的动画被挤下去，随后上移的问题 */
}
.v-enter-active,.v-leave-active{
	transition: all 0.5s ease;
}
/* 改类名，解决与图片分享中的滑动tabbar冲突，导致此处的tabbar点击无法切换的问题 */
.mui-bar-tab .mui-tab-item-home.mui-active {
    color: #007aff;
}
.mui-bar-tab .mui-tab-item-home {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}
.mui-bar-tab .mui-tab-item-home .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}
.mui-bar-tab .mui-tab-item-home .mui-icon~.mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
</style>